[gedy]

It makes sense as a layman - less testosterone means less fighting, aggressive behavior, chasing other mates, etc. Ensures more success for your offspring.

[necovek]

Worse ability to fend off competition too?

[silexia]

Disagree, my desire and ability to defend my children has gone way up. My desire to go and conquer and carry off other women has gone down.

[necovek]

Your baseline T correlates with your ability to add and maintain muscle mass, not just your motivation to get into conflict.